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targets/litex_acorn_baseboard: Integrate WS2812/NeoPixel. 

Tested with:
./litex_acorn_baseboard.py --cpu-type=None --uart-name=uartbone --with-ws2812 --build --csr-csv=csr.csv --load
litex_server --uart --uart-port=/dev/ttyUSBX
And test script: https://gist.github.com/enjoy-digital/c32c679a9ee4429d7f38a5ca5016a45a
This commit is contained in:
Florent Kermarrec 2021-11-04 16:36:25 +01:00
parent 808befec3b
commit 5e5ae880a4
1 changed files with 15 additions and 0 deletions
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15
litex_boards/targets/litex_acorn_baseboard.py
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@ -69,6 +69,7 @@ class BaseSoC(SoCCore):
with_etherbone = False, with_etherbone = False,
with_video_terminal = False, with_video_terminal = False,
with_lcd = False, with_lcd = False,
with_ws2812 = False,
**kwargs): **kwargs):
platform = litex_acorn_baseboard.Platform(toolchain="trellis") platform = litex_acorn_baseboard.Platform(toolchain="trellis")
@ -110,6 +111,18 @@ class BaseSoC(SoCCore):
# M2 -------------------------------------------------------------------------------------- # M2 --------------------------------------------------------------------------------------
self.comb += platform.request("m2_devslp").eq(0) # Enable SATA M2. self.comb += platform.request("m2_devslp").eq(0) # Enable SATA M2.
# WS2812 ----------------------------------------------------------------------------------
if with_ws2812:
from litex.build.generic_platform import Pins, IOStandard
from litex.soc.integration.soc import SoCRegion
from litex.soc.cores.led import WS2812
platform.add_extension([("ws2812", 0, Pins("pmod1:0"), IOStandard("LVCMOS33"))])
self.submodules.ws2812 = WS2812(platform.request("ws2812"), nleds=64, sys_clk_freq=sys_clk_freq)
self.bus.add_slave(name="ws2812", slave=self.ws2812.bus, region=SoCRegion(
origin = 0x2000_0000,
size = 64*4,
))
# Build -------------------------------------------------------------------------------------------- # Build --------------------------------------------------------------------------------------------
def main(): def main():
@ -128,6 +141,7 @@ def main():
viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI)") viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI)")
parser.add_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed)") parser.add_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed)")
parser.add_argument("--with-lcd", action="store_true", help="Enable OLED LCD support") parser.add_argument("--with-lcd", action="store_true", help="Enable OLED LCD support")
parser.add_argument("--with-ws2812", action="store_true", help="Enable WS2812 on PMOD1:0")
builder_args(parser) builder_args(parser)
soc_core_args(parser) soc_core_args(parser)
@ -141,6 +155,7 @@ def main():
with_etherbone = args.with_etherbone, with_etherbone = args.with_etherbone,
with_video_terminal = args.with_video_terminal, with_video_terminal = args.with_video_terminal,
with_lcd = args.with_lcd, with_lcd = args.with_lcd,
with_ws2812 = args.with_ws2812,
**soc_core_argdict(args) **soc_core_argdict(args)
) )
if args.with_spi_sdcard: if args.with_spi_sdcard: